Siphon closet-bowl.



No. 685,62l. Patented Oct; 29, I90].

. H. s. MADDOCK.

SIPHUN CLOSET BOWL.

{Application fiIed Apr. 14, 1900.)

( No Model.) 3Sheets-8heet I.

wit ewes THE Norms PETERS c0, PHDTO-LITHDG WASHINGTON, u c.

No. 685,621. Patented'flct. 29, mm.

H. s. MADDOCK.

SIPHUN CLOSET BOWL.

(Application filed. Apr. 14, 1900. (No Model.) 3 Sheets- Sheet 2.

No. 685,62l; Pafented Oct. 29, I90].

H. s. MAIJDDCK.

SIPHON CLOSET BOWL. (Application flled Apr. 14, 1 900.) (No Model.)

3 Sheets-Shut 3.

NITED STATES PATENT OFFICE.

HARRY S. MADDOCK, OF TRENTON, NEW JERSEY.

SIPHON CLOSET-BOWL.

SEECIFICATION forming part of Letters Patent No. 685,621, dated October29, 1901.

Application filedApril 14, 1900. Serial No. 121800- (No model.)

T0 at whom, it may concern:

Be it known that I, HARRY S. MADDOCK, a citizen of the United States,residing at Trenton, in the county of Mercer and State of New Jersey,have invented certain new and useful Improvements in SiphonCloset-Bowls; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the artto which it appertains to make and use the same.

My invention relates to certain new and useful improvements inwater-closet bowls, and particularly to bowls of thesiphon type, whereinthe downtake-leg of the siphon is primed by a jet in starting the'siphonic action.

In the accompanying drawings, Figure 1 represents a top plan View of "aportion of a closet-bowl embodying my invention. Fig. 2 represents aside elevation thereof. Fig. 3 represents a vertical longitudinalsection. Figs. 4, 5, 6, and 7 represent, respectively, sections taken onthe lines 4 4, 5 5, 6 6, and 7 7 of Fig. 3.

Similar letters of reference indicate similar parts throughout theseveral views.

Referring to the drawings, A indicates the main body portion or basin ofthe bowl, having the flushing-rim a, uptake-leg b, and downtake ordischarge leg 0.

Heretofore, so far as I am aware, it has been customary to construct thedividing-partition forming the seal between the basin and the uptake ofthe bowl as a single thin wall, descending at a sharp incline and havinga thin lower edge extending well down toward the bottom of the basin. Asa consequence there has always been a tendency for the paper used in thebowl to clog the comparatively narrow opening thus afforded andparticularly to catch on the thin edge referred to. Moreover, thisconstruction involves a deep uptake'and a considerable depth of water inthe bowl and necessitates a correspondingly powerful jet and water-headto initiate the siphonie action. In my improved bowl I obviate thesedisadvantages by making the incline of the dividing-wall much moregradual and giving it a broad and preferably fiat under surface, therebyforming at the bottom of the basin a substantially horizontal channel.This construction preserves and even increases the length of the seal,furnishes ample room below the partition for the pas sage of theoutflowing material, and reduces the depth of water in the ,bowl, andconsequently the depth of the column in the uptake-leg to be lifted overthe dam by the action of the jet, and therefore permits the downtake-legto be primed by a jet of much less power.

In the drawings, 01 indicates the dividingwall, having the under surface6 extending rearwardly to a distance substantially equal to the depth ofits rear edge below the waterlevel. The effective extent of the sealagainst backfiow of sewer-gas from the soil-pipe is therefore double thedistance from the waterlevel to the under surface of the dividingwall,and this long seal I obtain with a correspondingly low level of water inthe basin and a correspondingly short uptake.

I preferably provide the bowl with the customary bottom jet f, receivingits supply through the channels g, and, in fact, may employ this bottomjet alone to start the siphon. In addition to or in substitution forsaid bottom jet, however, I hollow out the lower portion of thedividing-wall at h and lead thereinto the water-supply channels 70 andestablish from the space ha jet m. The jet m is of itself suflicicnt tostart the siphon, although with a water-head too great to be ordinarilydesirable. In conjunction with the jetf, however, I find that the siphonmay be efiectively startedand the downtake promptly primed by an amountof water much less than would be required by either jet workingalone.Moreover, shouldthe bottom jet become clogged (which frequently happensin our western States owing to the alkaline deposits from the Water whenpermitted to stand long in the bowl) the jet m remains unclogged and infull operative condition.

A further advantage of the jet 4% is that it furnishes an absolutesafeguard against overthe bottom jet and outlet from bowl becomeclogged, thereby increasing the flow of water into the bowl through theflushing-rim, the temporary excess would be carried off by a flowthrough the channels 70 and the j et-aper ture 'm, thence to the siphon.

flow of the bowl, for the reason that should 1 Having thus described myinvention, what I claim is- 1. Asiphon-jetcloset-bowl havingitsdividing-wall provided with an under surface extending rearwardly in asubstantially horizontal direction to a distance substantially equal toits depth below the water-level, substantially as described.

2. Asiphon-jet closet-bowl havingitsdividing-wall provided with an undersurface extending rearwardly in a substantially horizontal direction toa distance substantially equal to its depth below the water-level, thelower portion of said wall being provided with a jet-aperture, and achannel for supplying water to said jet-apertu re, said channel having aconnection with the bowl; substantially as described.

3. Asiphon-jetcloset-bowl havingitsdividing-wall provided with an undersurface extending rearwardly in a substantially horizontal direction toa distance substantially equal to its depth below the water-level, saidbowl being provided with a jet-aperture at the bottom of its uptake-leg,and a channel for supplying water to said jet-aperture, said channelhaving a connection with the bowl; substantially as described.

4:- A siphon-jet closet-bowl,havingits dividing-Wall provided with anunder surface extending rearwardly in a substantially horizontaldirection to a distance substantially equal to its depth below theWZLiJGI-lGVBl, said bowl being provided with two jet-apertures andchannels for supplying water thereto, one of said jet-apertures being atthe bottom 'of the uptake-leg and the other in the lower portion of thedividingwall, said latter aper ture being connected with the bowl by wayof its supply-channel whereby overflow of the bowl is prevented,substantially as de scribed.

In testimony whereof I aflix my signature in presence of two witnesses.

HARRY S. MADDOCK. Witnesses:

EDWARD D. ANDERSON, CHARLES J. BOHLINGER.

